IEC 60898-1:2015(E) applies to a.c. air-break circuit-breakers for operation at 50 Hz, 60 Hz or 50/60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A. This second edition cancels and replaces the first edition published in 2002, Amendment 1:2002 and Amendment 2:2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Revision of 9.5 Terminals b) Revision of the test of glow wire c) Simplification of the figures for short circuit tests. The contents of the corrigendum of November 2015 have been included in this copy.